DE2807380A1 - Verfahren zum konzentrieren von waessrigen schwefelsaeureloesungen - Google Patents
Verfahren zum konzentrieren von waessrigen schwefelsaeureloesungenInfo
- Publication number
- DE2807380A1 DE2807380A1 DE19782807380 DE2807380A DE2807380A1 DE 2807380 A1 DE2807380 A1 DE 2807380A1 DE 19782807380 DE19782807380 DE 19782807380 DE 2807380 A DE2807380 A DE 2807380A DE 2807380 A1 DE2807380 A1 DE 2807380A1
- Authority
- DE
- Germany
- Prior art keywords
- sulfuric acid
- concentration
- iron
- calcium
- impurities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title description 2
- 239000002253 acid Substances 0.000 title description 2
- 239000011593 sulfur Substances 0.000 title description 2
- 229910052717 sulfur Inorganic materials 0.000 title description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 69
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 18
- 229910052791 calcium Inorganic materials 0.000 claims description 18
- 239000011575 calcium Substances 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 11
- 229910052719 titanium Inorganic materials 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- XBDUTCVQJHJTQZ-UHFFFAOYSA-L iron(2+) sulfate monohydrate Chemical compound O.[Fe+2].[O-]S([O-])(=O)=O XBDUTCVQJHJTQZ-UHFFFAOYSA-L 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 206010039509 Scab Diseases 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910010413 TiO 2 Inorganic materials 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 235000011132 calcium sulphate Nutrition 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/88—Concentration of sulfuric acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2779777A IT1086096B (it) | 1977-09-21 | 1977-09-21 | Procedimento per la concentrazione di soluzioni acquose di acido solforico |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2807380A1 true DE2807380A1 (de) | 1979-03-29 |
| DE2807380C2 DE2807380C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1990-08-09 |
Family
ID=11222349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782807380 Granted DE2807380A1 (de) | 1977-09-21 | 1978-02-21 | Verfahren zum konzentrieren von waessrigen schwefelsaeureloesungen |
Country Status (8)
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5068093A (en) * | 1987-11-23 | 1991-11-26 | Sulzer-Escher Wyss Ag | Method for producing titanium dioxide |
| EP0666240A1 (de) * | 1994-02-08 | 1995-08-09 | Bayer Ag | Verfahren zum Eindampfen von Gebrauchtschwefelsäure |
| DE4403840A1 (de) * | 1994-02-08 | 1995-08-10 | Bayer Ag | Verfahren zur Rückgewinnung von Schwefelsäure aus metallsulfathaltigen Gebrauchtsäuren |
| AU709404B2 (en) * | 1995-07-24 | 1999-08-26 | Kerr-Mcgee Pigments Gmbh & Co. Kg | Process for the recovery of sulphuric acid from spent acids containing metal sulphates |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4737670B2 (ja) * | 2005-03-30 | 2011-08-03 | 株式会社ササクラ | カルシウム及び硫酸を含む廃水の処理方法及びその装置 |
| WO2008003297A2 (de) * | 2006-07-03 | 2008-01-10 | Lailach Guenter | Verfahren und anlage zum konzentrieren metallsulfathaltiger schwefelsäure |
| CN110104617A (zh) * | 2019-04-24 | 2019-08-09 | 成都先进金属材料产业技术研究院有限公司 | 利用硫酸铝铵浓缩钛白废酸的方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2647084A1 (de) * | 1975-10-20 | 1977-04-21 | Pechiney Aluminium | Verfahren zur reinigung einer verduennten schwefelsaeureloesung |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2078088A (en) * | 1935-11-22 | 1937-04-20 | Mantius | Process of recovering sulphuric acid from sulphuric acid solutions of sulphates |
| FR1076258A (fr) * | 1952-03-25 | 1954-10-25 | C D Patents Ltd | Procédé pour la récupération de l'acide sulfurique et des sulfates inorganiques à partir des liqueurs usées diluées |
| DE957473C (de) * | 1953-06-02 | 1957-02-07 | Bayer Ag | Verfahren zum Kristallisieren von Stoffen, die mit verschiedenen Mengen Kristallwasser kristallisieren koennen, in kristallwasserfreier oder kristallwasserarmer Form |
| DE1131193B (de) * | 1960-10-14 | 1962-06-14 | Bayer Ag | Verfahren zum Einengen und Entsalzen verduennter, salzhaltiger Schwefelsaeure |
| JPS5314429B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-05-11 | 1978-05-17 |
-
1977
- 1977-09-21 IT IT2779777A patent/IT1086096B/it active
-
1978
- 1978-02-21 DE DE19782807380 patent/DE2807380A1/de active Granted
- 1978-09-18 NL NL7809474A patent/NL7809474A/xx not_active Application Discontinuation
- 1978-09-19 JP JP11416778A patent/JPS5461094A/ja active Granted
- 1978-09-19 RO RO7895225A patent/RO76235A/ro unknown
- 1978-09-20 CH CH981178A patent/CH638465A5/de not_active IP Right Cessation
- 1978-09-21 FR FR7827059A patent/FR2403973A1/fr active Granted
- 1978-09-21 GB GB7837625A patent/GB2004469B/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2647084A1 (de) * | 1975-10-20 | 1977-04-21 | Pechiney Aluminium | Verfahren zur reinigung einer verduennten schwefelsaeureloesung |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5068093A (en) * | 1987-11-23 | 1991-11-26 | Sulzer-Escher Wyss Ag | Method for producing titanium dioxide |
| EP0666240A1 (de) * | 1994-02-08 | 1995-08-09 | Bayer Ag | Verfahren zum Eindampfen von Gebrauchtschwefelsäure |
| DE4403840A1 (de) * | 1994-02-08 | 1995-08-10 | Bayer Ag | Verfahren zur Rückgewinnung von Schwefelsäure aus metallsulfathaltigen Gebrauchtsäuren |
| DE4403841A1 (de) * | 1994-02-08 | 1995-08-10 | Bayer Ag | Verfahren zum Eindampfen von Gebrauchtschwefelsäure |
| AU709404B2 (en) * | 1995-07-24 | 1999-08-26 | Kerr-Mcgee Pigments Gmbh & Co. Kg | Process for the recovery of sulphuric acid from spent acids containing metal sulphates |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2004469A (en) | 1979-04-04 |
| GB2004469B (en) | 1982-07-14 |
| RO76235A (ro) | 1981-04-30 |
| FR2403973B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1983-01-28 |
| FR2403973A1 (fr) | 1979-04-20 |
| NL7809474A (nl) | 1979-03-23 |
| JPS5461094A (en) | 1979-05-17 |
| DE2807380C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1990-08-09 |
| IT1086096B (it) | 1985-05-28 |
| CH638465A5 (de) | 1983-09-30 |
| JPS6335320B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1988-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2719701C3 (de) | Verfahren zur Überführung von Naßphosphorsäure in eine nicht zu Ausfällungen neigende konzentrierte Phosphorsäure | |
| DE4013974C1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| EP0132820B1 (de) | Verfahren zur Aufarbeitung metallsulfathaltiger Schwefelsäuren | |
| DE2807380A1 (de) | Verfahren zum konzentrieren von waessrigen schwefelsaeureloesungen | |
| DE1467110B2 (de) | Verfahren zum Entfärben und Klären von wäßrigen Phosphorsäurelösungen | |
| EP0147608A1 (de) | Verfahren zur Herstellung von Titandioxid | |
| DE2423815C2 (de) | Verfahren zur Herstellung von konzentrierter quecksilberfreier Schwefelsäure | |
| DE2618122C2 (de) | Verfahren zur Aufarbeitung verdünnter eisen(II)-sulfathaltiger Schwefelsäurelösungen | |
| DE3726047A1 (de) | Verfahren zum abtrennen von metallsulfaten aus schwefelsaeure | |
| DE2729755C2 (de) | Verfahren zur Herstellung von Titandioxid durch diskontinuierliches Aufschließen von Ilmeniterzen mit Schwefelsäure | |
| DE1022564B (de) | Verfahren zur Gewinnung von Schwefelsaeure aus sauren Abfallfluessigkeiten | |
| EP0194544B1 (de) | Verfahren zur Rezirkulierung metallsulfathaltiger Schwefelsäure | |
| DE2630363A1 (de) | Verfahren zur behandlung waessriger schwefelsaeure | |
| DE69603385T2 (de) | Verfahren zur Entfernung von Schwefeldioxid aus Gasen, die dieses enthalten, unter gleichzeitigen Herstellung von Elementarschwefel | |
| DE2807394C2 (de) | Verfahren zum Konzentrieren und Reinigen von wäßrigen Schwefelsäurelösungen | |
| DE2063191A1 (de) | Verfahren zur Herstellung von Natriumsulfat | |
| CH677933A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| DE639158C (de) | Verfahren zur Herstellung von Kupfercyanuer | |
| DE2324694C3 (de) | Verfahren zum Entfernen von Quecksilber aus Schwefelsäure | |
| DE598773C (de) | Verfahren zur Herstellung von grobkoernigem Ammonsulfat aus verdampfendem, fluessigem Ammoniak und Schwefelsaeure | |
| DE661552C (de) | Verfahren zur Gewinnung von Schwefeldioxyd aus Gasen | |
| CH677921A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| DE1583944C3 (de) | Verfahren zum Entfernen von unerwünschtem Zinkoxid aus Eisenoxidflugstaub | |
| AT149343B (de) | Regenerativverfahren zur Gewinnung von Schwefeldioxyd durch Absorption. | |
| DE3724677A1 (de) | Verfahren zur aufarbeitung von eisen(ii)-sulfathaltigen metallsulfatgemischen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAM | Search report available | ||
| OC | Search report available | ||
| 8110 | Request for examination paragraph 44 | ||
| 8127 | New person/name/address of the applicant |
Owner name: MONTEDISON S.P.A., MAILAND/MILANO, IT SULZER-ESCHE |
|
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8339 | Ceased/non-payment of the annual fee |